/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:20:17,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:20:17,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:20:17,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:20:17,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:20:17,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:20:17,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:20:17,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:20:17,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:20:17,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:20:17,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:20:17,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:20:17,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:20:17,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:20:17,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:20:17,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:20:17,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:20:17,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:20:17,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:20:17,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:20:17,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:20:17,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:20:17,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:20:17,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:20:17,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:20:17,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:20:17,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:20:17,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:20:17,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:20:17,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:20:17,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:20:17,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:20:17,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:20:17,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:20:17,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:20:17,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:20:17,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:20:17,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:20:17,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:20:17,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:20:17,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:20:17,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:20:17,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:20:17,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:20:17,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:20:17,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:20:17,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:20:17,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:20:17,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:20:17,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:20:17,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:20:17,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:20:17,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:20:17,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:20:17,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:20:17,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:20:17,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:20:17,755 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:20:17,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:20:17,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:20:17,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:20:17,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:20:17,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:20:17,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:20:17,756 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:20:18,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:20:18,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:20:18,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:20:18,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:20:18,167 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:20:18,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c [2020-10-23 20:20:18,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecc77a693/3acdaa0e7c3f41858c36efc1c4d76c2b/FLAGbbc9baa6a [2020-10-23 20:20:18,993 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:20:18,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product45.cil.c [2020-10-23 20:20:19,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecc77a693/3acdaa0e7c3f41858c36efc1c4d76c2b/FLAGbbc9baa6a [2020-10-23 20:20:19,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecc77a693/3acdaa0e7c3f41858c36efc1c4d76c2b [2020-10-23 20:20:19,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:20:19,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:20:19,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:20:19,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:20:19,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:20:19,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:20:19" (1/1) ... [2020-10-23 20:20:19,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c96fb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:19, skipping insertion in model container [2020-10-23 20:20:19,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:20:19" (1/1) ... [2020-10-23 20:20:19,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:20:19,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:20:19,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:20:19,758 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:20:19,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:20:19,922 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:20:19,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:19 WrapperNode [2020-10-23 20:20:19,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:20:19,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:20:19,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:20:19,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:20:19,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:19" (1/1) ... [2020-10-23 20:20:19,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:19" (1/1) ... [2020-10-23 20:20:19,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:19" (1/1) ... [2020-10-23 20:20:19,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:19" (1/1) ... [2020-10-23 20:20:20,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:19" (1/1) ... [2020-10-23 20:20:20,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:19" (1/1) ... [2020-10-23 20:20:20,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:19" (1/1) ... [2020-10-23 20:20:20,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:20:20,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:20:20,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:20:20,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:20:20,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:20:20,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:20:20,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:20:20,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:20:20,192 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:20:20,192 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:20:20,192 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:20:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:20:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:20:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:20:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:20:20,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:20:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:20:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:20:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:20:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:20:20,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:20:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:20:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:20:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:20:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:20:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:20:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:20:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:20:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:20:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:20:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:20:20,196 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:20:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:20:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:20:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:20:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:20:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:20:20,197 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:20:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:20:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:20:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:20:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:20:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:20:20,198 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:20:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:20:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:20:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:20:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:20:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:20:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:20:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:20:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:20:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:20:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:20:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:20:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:20:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:20:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:20:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:20:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:20:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:20:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:20:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:20:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:20:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:20:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:20:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:20:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:20:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:20:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:20:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:20:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:20:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:20:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:20:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:20:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:20:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:20:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:20:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:20:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:20:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:20:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:20:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:20:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:20:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:20:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:20:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:20:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-10-23 20:20:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:20:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-10-23 20:20:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:20:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:20:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:20:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:20:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:20:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:20:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:20:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:20:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:20:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:20:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:20:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:20:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:20:21,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:20:21,478 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:20:21,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:21 BoogieIcfgContainer [2020-10-23 20:20:21,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:20:21,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:20:21,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:20:21,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:20:21,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:20:19" (1/3) ... [2020-10-23 20:20:21,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf96f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:21, skipping insertion in model container [2020-10-23 20:20:21,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:19" (2/3) ... [2020-10-23 20:20:21,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf96f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:21, skipping insertion in model container [2020-10-23 20:20:21,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:21" (3/3) ... [2020-10-23 20:20:21,490 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product45.cil.c [2020-10-23 20:20:21,501 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:20:21,508 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:20:21,521 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:20:21,545 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:20:21,545 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:20:21,546 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:20:21,546 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:20:21,546 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:20:21,546 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:20:21,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:20:21,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:20:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states. [2020-10-23 20:20:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:20:21,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:21,601 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:21,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:21,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1954541137, now seen corresponding path program 1 times [2020-10-23 20:20:21,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:21,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641039419] [2020-10-23 20:20:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:21,707 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,558 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:22,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:20:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:20:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:20:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:20:22,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641039419] [2020-10-23 20:20:22,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:22,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:20:22,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894774125] [2020-10-23 20:20:22,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:20:22,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:22,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:20:22,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:20:22,815 INFO L87 Difference]: Start difference. First operand 337 states. Second operand 4 states. [2020-10-23 20:20:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:24,471 INFO L93 Difference]: Finished difference Result 525 states and 614 transitions. [2020-10-23 20:20:24,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:20:24,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:20:24,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:24,490 INFO L225 Difference]: With dead ends: 525 [2020-10-23 20:20:24,490 INFO L226 Difference]: Without dead ends: 329 [2020-10-23 20:20:24,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:20:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-23 20:20:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 283. [2020-10-23 20:20:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-23 20:20:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 308 transitions. [2020-10-23 20:20:24,698 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 308 transitions. Word has length 166 [2020-10-23 20:20:24,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:24,699 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 308 transitions. [2020-10-23 20:20:24,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:20:24,699 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 308 transitions. [2020-10-23 20:20:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:20:24,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:24,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:24,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:20:24,705 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:24,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:24,706 INFO L82 PathProgramCache]: Analyzing trace with hash -714638260, now seen corresponding path program 1 times [2020-10-23 20:20:24,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:24,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480299476] [2020-10-23 20:20:24,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:24,711 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:25,277 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:25,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:25,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:25,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:25,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:25,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:25,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:25,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:20:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:25,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:20:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:25,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:20:25,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480299476] [2020-10-23 20:20:25,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:25,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:20:25,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195482826] [2020-10-23 20:20:25,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:20:25,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:25,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:20:25,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:20:25,399 INFO L87 Difference]: Start difference. First operand 283 states and 308 transitions. Second operand 5 states. [2020-10-23 20:20:26,273 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:27,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:27,669 INFO L93 Difference]: Finished difference Result 451 states and 506 transitions. [2020-10-23 20:20:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:20:27,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:20:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:27,674 INFO L225 Difference]: With dead ends: 451 [2020-10-23 20:20:27,674 INFO L226 Difference]: Without dead ends: 318 [2020-10-23 20:20:27,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:20:27,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-23 20:20:27,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 273. [2020-10-23 20:20:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-23 20:20:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 295 transitions. [2020-10-23 20:20:27,774 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 295 transitions. Word has length 167 [2020-10-23 20:20:27,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:27,775 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 295 transitions. [2020-10-23 20:20:27,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:20:27,775 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 295 transitions. [2020-10-23 20:20:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-23 20:20:27,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:27,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:27,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:20:27,779 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:27,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:27,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1656193192, now seen corresponding path program 1 times [2020-10-23 20:20:27,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:27,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031546699] [2020-10-23 20:20:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:27,784 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:28,392 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:28,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:28,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:28,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:28,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:28,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:28,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:28,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:28,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:28,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:20:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:28,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 20:20:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:20:28,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031546699] [2020-10-23 20:20:28,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:28,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:28,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670346397] [2020-10-23 20:20:28,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:28,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:28,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:28,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:28,658 INFO L87 Difference]: Start difference. First operand 273 states and 295 transitions. Second operand 10 states. [2020-10-23 20:20:29,348 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:29,855 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:30,250 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:30,660 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:31,099 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:31,484 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:33,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:33,484 INFO L93 Difference]: Finished difference Result 471 states and 532 transitions. [2020-10-23 20:20:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:20:33,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-10-23 20:20:33,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:33,493 INFO L225 Difference]: With dead ends: 471 [2020-10-23 20:20:33,493 INFO L226 Difference]: Without dead ends: 318 [2020-10-23 20:20:33,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:20:33,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-23 20:20:33,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 273. [2020-10-23 20:20:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-23 20:20:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 294 transitions. [2020-10-23 20:20:33,633 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 294 transitions. Word has length 176 [2020-10-23 20:20:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:33,635 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 294 transitions. [2020-10-23 20:20:33,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 294 transitions. [2020-10-23 20:20:33,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-23 20:20:33,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:33,640 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:33,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:20:33,641 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:33,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:33,642 INFO L82 PathProgramCache]: Analyzing trace with hash -333614147, now seen corresponding path program 1 times [2020-10-23 20:20:33,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:33,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611077097] [2020-10-23 20:20:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:33,648 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,104 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:34,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-23 20:20:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-23 20:20:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:20:34,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611077097] [2020-10-23 20:20:34,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:34,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:20:34,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192448126] [2020-10-23 20:20:34,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:20:34,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:34,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:20:34,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:20:34,284 INFO L87 Difference]: Start difference. First operand 273 states and 294 transitions. Second operand 7 states. [2020-10-23 20:20:35,007 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:37,309 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:38,110 INFO L93 Difference]: Finished difference Result 626 states and 715 transitions. [2020-10-23 20:20:38,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:20:38,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-10-23 20:20:38,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:38,117 INFO L225 Difference]: With dead ends: 626 [2020-10-23 20:20:38,117 INFO L226 Difference]: Without dead ends: 473 [2020-10-23 20:20:38,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:20:38,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-10-23 20:20:38,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 403. [2020-10-23 20:20:38,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-23 20:20:38,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 435 transitions. [2020-10-23 20:20:38,283 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 435 transitions. Word has length 189 [2020-10-23 20:20:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:38,284 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 435 transitions. [2020-10-23 20:20:38,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:20:38,284 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 435 transitions. [2020-10-23 20:20:38,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-23 20:20:38,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:38,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:38,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:20:38,288 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:38,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:38,288 INFO L82 PathProgramCache]: Analyzing trace with hash 126365457, now seen corresponding path program 1 times [2020-10-23 20:20:38,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:38,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126641646] [2020-10-23 20:20:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:38,296 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,727 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:38,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-23 20:20:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-23 20:20:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:20:38,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126641646] [2020-10-23 20:20:38,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:38,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:38,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775499782] [2020-10-23 20:20:38,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:38,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:38,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:38,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:38,989 INFO L87 Difference]: Start difference. First operand 403 states and 435 transitions. Second operand 10 states. [2020-10-23 20:20:39,660 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:41,106 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:41,533 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:41,949 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:42,338 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:42,807 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:43,194 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:45,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:45,487 INFO L93 Difference]: Finished difference Result 998 states and 1166 transitions. [2020-10-23 20:20:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 20:20:45,488 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 213 [2020-10-23 20:20:45,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:45,493 INFO L225 Difference]: With dead ends: 998 [2020-10-23 20:20:45,493 INFO L226 Difference]: Without dead ends: 715 [2020-10-23 20:20:45,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:20:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-10-23 20:20:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 614. [2020-10-23 20:20:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-10-23 20:20:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 675 transitions. [2020-10-23 20:20:45,734 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 675 transitions. Word has length 213 [2020-10-23 20:20:45,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:45,734 INFO L481 AbstractCegarLoop]: Abstraction has 614 states and 675 transitions. [2020-10-23 20:20:45,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 675 transitions. [2020-10-23 20:20:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-23 20:20:45,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:45,739 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:45,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:20:45,739 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:45,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:45,740 INFO L82 PathProgramCache]: Analyzing trace with hash -564128684, now seen corresponding path program 1 times [2020-10-23 20:20:45,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:45,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902955240] [2020-10-23 20:20:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:45,744 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,180 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-23 20:20:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-23 20:20:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 20:20:46,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902955240] [2020-10-23 20:20:46,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:46,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:46,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229179730] [2020-10-23 20:20:46,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:46,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:46,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:46,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:46,378 INFO L87 Difference]: Start difference. First operand 614 states and 675 transitions. Second operand 10 states. [2020-10-23 20:20:47,046 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:48,055 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:48,499 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:50,030 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:50,424 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:50,848 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:51,432 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:51,831 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:52,206 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:52,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:52,915 INFO L93 Difference]: Finished difference Result 1202 states and 1372 transitions. [2020-10-23 20:20:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:20:52,916 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 213 [2020-10-23 20:20:52,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:52,923 INFO L225 Difference]: With dead ends: 1202 [2020-10-23 20:20:52,923 INFO L226 Difference]: Without dead ends: 708 [2020-10-23 20:20:52,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:20:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-23 20:20:53,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 612. [2020-10-23 20:20:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-10-23 20:20:53,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 669 transitions. [2020-10-23 20:20:53,259 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 669 transitions. Word has length 213 [2020-10-23 20:20:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:53,260 INFO L481 AbstractCegarLoop]: Abstraction has 612 states and 669 transitions. [2020-10-23 20:20:53,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 669 transitions. [2020-10-23 20:20:53,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-23 20:20:53,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:53,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:53,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:20:53,266 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:53,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:53,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1847005977, now seen corresponding path program 1 times [2020-10-23 20:20:53,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:53,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718630310] [2020-10-23 20:20:53,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:53,273 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,656 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:53,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:20:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 20:20:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 20:20:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:20:53,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718630310] [2020-10-23 20:20:53,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:53,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:20:53,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482540558] [2020-10-23 20:20:53,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:20:53,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:53,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:20:53,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:20:53,923 INFO L87 Difference]: Start difference. First operand 612 states and 669 transitions. Second operand 10 states. [2020-10-23 20:20:55,535 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:55,927 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:56,337 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:20:56,738 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:57,137 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:57,523 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:58,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:58,844 INFO L93 Difference]: Finished difference Result 1210 states and 1387 transitions. [2020-10-23 20:20:58,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:20:58,845 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 236 [2020-10-23 20:20:58,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:58,850 INFO L225 Difference]: With dead ends: 1210 [2020-10-23 20:20:58,850 INFO L226 Difference]: Without dead ends: 718 [2020-10-23 20:20:58,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:20:58,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-10-23 20:20:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 628. [2020-10-23 20:20:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-10-23 20:20:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 685 transitions. [2020-10-23 20:20:59,122 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 685 transitions. Word has length 236 [2020-10-23 20:20:59,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:59,123 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 685 transitions. [2020-10-23 20:20:59,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:20:59,123 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 685 transitions. [2020-10-23 20:20:59,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-23 20:20:59,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:59,128 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:59,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:20:59,128 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:59,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:59,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1072307897, now seen corresponding path program 1 times [2020-10-23 20:20:59,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:59,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009849084] [2020-10-23 20:20:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:59,133 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,539 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:59,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:20:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:20:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:20:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:20:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-23 20:20:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-23 20:20:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:20:59,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009849084] [2020-10-23 20:20:59,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:59,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:20:59,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014539577] [2020-10-23 20:20:59,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:20:59,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:59,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:20:59,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:20:59,880 INFO L87 Difference]: Start difference. First operand 628 states and 685 transitions. Second operand 13 states. [2020-10-23 20:21:00,702 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:01,143 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:21:01,571 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:01,998 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:02,412 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:03,701 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:04,094 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:04,514 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:04,961 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:21:05,386 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:07,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:07,004 INFO L93 Difference]: Finished difference Result 1095 states and 1240 transitions. [2020-10-23 20:21:07,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:21:07,005 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 236 [2020-10-23 20:21:07,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:07,009 INFO L225 Difference]: With dead ends: 1095 [2020-10-23 20:21:07,009 INFO L226 Difference]: Without dead ends: 587 [2020-10-23 20:21:07,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:21:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-10-23 20:21:07,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 518. [2020-10-23 20:21:07,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-23 20:21:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 555 transitions. [2020-10-23 20:21:07,264 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 555 transitions. Word has length 236 [2020-10-23 20:21:07,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:07,265 INFO L481 AbstractCegarLoop]: Abstraction has 518 states and 555 transitions. [2020-10-23 20:21:07,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:21:07,265 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 555 transitions. [2020-10-23 20:21:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-23 20:21:07,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:07,271 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:21:07,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:21:07,274 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:21:07,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:07,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2049175579, now seen corresponding path program 1 times [2020-10-23 20:21:07,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:07,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436118293] [2020-10-23 20:21:07,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:07,279 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:21:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,834 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:21:07,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:21:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:21:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:21:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:21:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:21:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:21:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:21:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:21:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:21:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:21:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:21:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:21:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:21:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 20:21:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-23 20:21:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-23 20:21:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:21:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:21:08,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436118293] [2020-10-23 20:21:08,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:21:08,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:21:08,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318791097] [2020-10-23 20:21:08,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:21:08,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:21:08,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:21:08,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:21:08,162 INFO L87 Difference]: Start difference. First operand 518 states and 555 transitions. Second operand 14 states. [2020-10-23 20:21:09,303 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:21:10,496 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:12,627 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:21:13,458 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:21:13,974 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:14,379 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:15,137 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:21:15,548 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:16,052 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:21:16,469 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:18,623 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:21:19,023 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:21:19,456 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:21:20,327 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:21:22,076 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:21:22,915 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:21:23,768 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:21:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:21:24,385 INFO L93 Difference]: Finished difference Result 1423 states and 1603 transitions. [2020-10-23 20:21:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-23 20:21:24,386 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 241 [2020-10-23 20:21:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:21:24,394 INFO L225 Difference]: With dead ends: 1423 [2020-10-23 20:21:24,395 INFO L226 Difference]: Without dead ends: 1125 [2020-10-23 20:21:24,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=499, Invalid=1853, Unknown=0, NotChecked=0, Total=2352 [2020-10-23 20:21:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-10-23 20:21:24,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1027. [2020-10-23 20:21:24,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2020-10-23 20:21:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1106 transitions. [2020-10-23 20:21:24,887 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1106 transitions. Word has length 241 [2020-10-23 20:21:24,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:21:24,887 INFO L481 AbstractCegarLoop]: Abstraction has 1027 states and 1106 transitions. [2020-10-23 20:21:24,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:21:24,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1106 transitions. [2020-10-23 20:21:24,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-23 20:21:24,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:21:24,894 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:21:24,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:21:24,894 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:21:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:21:24,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1309046886, now seen corresponding path program 1 times [2020-10-23 20:21:24,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:21:24,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792729297] [2020-10-23 20:21:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:21:24,938 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:21:24,943 INFO L168 Benchmark]: Toolchain (without parser) took 65678.76 ms. Allocated memory was 152.0 MB in the beginning and 615.5 MB in the end (delta: 463.5 MB). Free memory was 127.3 MB in the beginning and 343.2 MB in the end (delta: -215.9 MB). Peak memory consumption was 248.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:24,943 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 126.3 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:21:24,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.42 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 105.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:24,944 INFO L168 Benchmark]: Boogie Preprocessor took 177.08 ms. Allocated memory is still 152.0 MB. Free memory was 105.2 MB in the beginning and 133.5 MB in the end (delta: -28.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:24,945 INFO L168 Benchmark]: RCFGBuilder took 1379.28 ms. Allocated memory is still 152.0 MB. Free memory was 133.5 MB in the beginning and 87.5 MB in the end (delta: 46.0 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:24,946 INFO L168 Benchmark]: TraceAbstraction took 63458.50 ms. Allocated memory was 152.0 MB in the beginning and 615.5 MB in the end (delta: 463.5 MB). Free memory was 87.5 MB in the beginning and 343.2 MB in the end (delta: -255.7 MB). Peak memory consumption was 208.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:21:24,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 126.3 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 649.42 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 105.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 177.08 ms. Allocated memory is still 152.0 MB. Free memory was 105.2 MB in the beginning and 133.5 MB in the end (delta: -28.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1379.28 ms. Allocated memory is still 152.0 MB. Free memory was 133.5 MB in the beginning and 87.5 MB in the end (delta: 46.0 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 63458.50 ms. Allocated memory was 152.0 MB in the beginning and 615.5 MB in the end (delta: 463.5 MB). Free memory was 87.5 MB in the beginning and 343.2 MB in the end (delta: -255.7 MB). Peak memory consumption was 208.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...